I have been searching for a bit and if its was obvious I apologize but the only reference I see to how to set the checkbox checked is this post but it has no answer.

How do I default the checkbox checked instead of unchecked?

https://www.koolreport.com/forum/topics/1349

                                <strong>File Name</strong>
                                <?php
                                CheckBoxList::create(array(
                                    "name"=>"file_name",
                                    "data"=>$g_misc_info->_misc_all_file_groups
                                ));
                                ?>

Yes thank you that worked.